Scott Cooper’s Whitey Bulger saga is a confident and nasty film with impressive performances from a starry castScott Cooper’s Black Mass is a big, brash, horribly watchable gangster picture taken from an extraordinary true story and conceived on familiar generic lines. Johnny Depp’s South Boston wiseguy James “Whitey” Bulger, with his shaven bald head and weird blue eyes is a fully accredited sociopath with a groany-deep voice like Ray Liotta in GoodFellas.